F. engels. contribuciones a la historia del cristianismo primitivo.Federico Engeles · First published 2021Open the Tome
A revision of Hepatostolonophora Engel et Schust., nom. nov. (Hepaticae)John J. Engel · First published 1979Open the Tome
"The need for a new medical model: a challenge for biomedicine" by George L. EngelG.L EngelOpen the Tome
